WTW Lab Catalog 2012, Dissolved Oxygen · Dissolved oxygen is an important parameter in...

For information visit www.WTW.com for a customer care center near you or inside US: call WTW 800 645 5999.54

D i s s o l v e d O x y g e nDissolved oxygen is present in virtually every liquid. For example, at a temperature of 20 °C (68 °F) and an atmospheric pressure of 1013 mbar, saturated water contains about 9 mg/l oxygen. Ethanol can contain up to 40 mg/l, whereas glycerol only has about 2 mg/l.

Liquid absorbs oxygen until the partial pressure of oxygen in the liquid is in equilibrium with the air or gas in which it is in contact. The actual concentration of dissolved oxygen depends on a number of factors, such as temperature, air pressure, oxygen consumption by microorganisms in a biodegradation process or oxygen production by algae.

The oxygen concentration is important for the:

• Living conditions for fish and microorganisms in waters

• Degradation processes in wastewater treatment

• Corrosion processes in pipelines

• Shelf life of beverages, etc.

The determination of the oxygen concentration was formerly carried out by the WINKLER titration method. Today, electrochemical measurement is a recognized method in numerous standard procedures. During the last years the optical measuring of dissolved oxygen has become more important.

In its simplest form a dissolved oxygen sensor contains a working electrode and a counter-electrode. Both electrodes are located in an electrolyte system which is separated from the sample by a gas-permeable membrane. The working electrode reduces the oxygen molecules to hydroxide ions. In this electrochemical reaction a current flows from the counter-electrode to the working electrode. The more oxygen present in the sample, the larger the current signal. The D.O. meter calculates the concentration of dissolved oxygen in the sample from this signal. As for optical mea-surements there are no chemical reactions involved. A special fluorescent dye is used instead, which is activated by light in the measuring membrane. In the presence of oxygen the fluorescence changes its character (quenching), this effect is used for the quantitative determination.

D i s s o l v e d O x y g e n M e a s u r e m e n t

For information visit www.WTW.com for a customer care center near you or inside US: call WTW 800 645 5999.

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D i s s o l v e d O x y g e n M e t e r s

A p p l i c a t i o n R a n g e S e n s o r sApplication Range FDO® 925 ConOx DurOx® CellOx® 325 StirrOx® G TA 197 Oxi

BOD measurements ● – – ❍ ● –

Fish farming ❍ ● ● ❍ – –

Surface waters ● ● ❍ ● – –

Ground water ● ❍ – ❍ – ●

Control measurements ● ● ● ● ❍ –

Depth measurements ● (25 m/82 ft.) – – – – ●

Laboratory measurements ● ❍ – ● ❍ –

Pharmaceuticals ● ❍ ❍ ● – –

Biotechnology (non-autoclavable) ● ❍ ❍ ● – –

Wastewater treatment plant: aeration tank

● ❍ ● ❍ – –

applicable instruments: Oxi 3315, MultiLine®

3410, 3420, 3430 inoLab® Multi IDS

Multi 350i/ 3500i*

ProfiLine Oxi, Multi 350i/

3500i*

all, except MultiLine®, Oxi 3315

inoLab® Oxi 7310, 1970i

1970i

A p p l i c a t i o n R a n g e D i s s o l v e d O x y g e n M e t e r s

● Recommended by WTW ❍ Conditionally applicable – Not recommended

Application Range

inoLab®

Prof

i Lin

e O

xi 1

970i

Mul

tiLin

e® ID

S

Portable Meters

Mul

ti I

DS

Oxi

731

0

Oxi

320

5

Oxi

321

0

Oxi

331

0

Oxi

331

5

Routine measurement ❍ – – ❍ ● ● – ❍

Routine measurement with documentation

● ● ● ● – – ● ●

AQA with documentation ● ● ● ● – – ● ●

R&D high precision ● ● ● ● – ● ● ●

Control measurements ● ● ● ● ❍ ● ● ●

LIMS connection ● ● ● ● – – ● ●

Quality assurance ● ● ❍ ● – ● ● ●

Training ❍ ● ❍ ❍ ❍ ● ❍ ❍

Service – – ● ● ● ● ● ●

Laboratory measurements ● ● ● ❍ – – ❍ ❍

Field measurements – – ● ● ● ● ● ●

Depth measurements – – ● ● – – – ●

External control/ PC connection/ PC control

–

●

–

●

● –

●

● –

–

●

–– –

–

●

–

–

●

–

BOD measurements with self-stirring sensor

– ● ● – – – – –

BOD measurements with assessment program

– – – – – – – –

see page 56 58 65 60 64 63 62 61

For dissolved oxygen measurement with multi-parameter instruments, see pages 14 and 18

* North American version

OxiFor information visit www.WTW.com for a customer care center near you or inside US: call WTW 800 645 5999.56

L a b o r a t o r y D i s s o l v e d O x y g e n M e t e r sDissolved oxygen is one of the most frequently measured parameters in the laboratory. It plays a large role in the deg-radation of substances and the growth of microorganisms, both in environmental technology and in biotechnology.

Dissolved oxygen measure-ments with new digital multi-parameter benchtop meters inoLab® IDS see page 14

i n o L a b ®

Measuring safety

• Through digital transmission of signals the sensor data is easily provided.

• Display of service information for supporting the ideal function

• Maintenance free measuring system without use of chemicals through factory calibrated sensor cap

• Automatic air pressure compensation for precise measuring results

• Measuring safety without compromises

• Digital sensor recognition

• Intelligent sensor rating

i n o L a b ® M u l t i 9 3 1 0 I D S

D e t e r m i n i n g d i s s o l v e d o x y g e n …… with the innovative inoLab® Multi 9310 IDS

The new inoLab® Multi 9310 IDS is ideal for digital, optical DO measurements in the laboratory. The IDS technology perfectly supports measuring in the easiest way along with efficient documentation. Without self consumption and resis-tant against air bubbles, carbon dioxide and ethanol the optical DO sensor FDO® 925 is not only recommended for BOD measuring, but also for further applications throughout the laboratory.

N E W


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3 Year Warranty

IP 43 cETLus

D i g i t a l L a b o r a t o r y M e t e r s

GLP/AQA documentation

• Automatic, digital recording of all sensor data for biunique traceability of measuring values• User administration can be activated for allocation of user and measuring results• Transfer of all data in .csv format via USB interface to PC, on demand formatted transfer into Excel

(MultiLab® Importer, included in the delivery scope or as download)• Data output via optional built-in printer possible

Flexible and powerful:

• Adjustable t90 for different applications• Measures partial pressure, concentration

and saturation • Salinity corrections• Storage for large measuring batches

For other SETs or sensors in SET, see WTW Product Details

O r d e r i n g I n f o r m a t i o nDigital inoLab® multiparameter SETs Order No.

inoLab® Multi 9310 IDS SET 4 Digital multiparameter benchtop meter, set including IDS sensor, for measurements/documentation according GLP/AQA. With single channel input for pH/mV, dissolved oxygen and conductivity. Meter with universal power supply, stand and operation manual, optical IDS DO sensor FDO® 925,software and USB cable.

1FD354

Te c h n i c a l D a t aModel inoLab® Multi 9310 IDS

Measuring channel 1 (universal)

Display LCD graphic, backlit

CMC/QSC Yes/Yes

Data storage Manual 500/5000 automatic

Logger Manual/time-controlled

Interface Mini USB

Printer (optional) Thermo printer, width 58 mm

Power supply Universal power supply 100 to 240 V,50/60 Hz, 4 x 1,5 V AA or 4 x 1.2 VNiMH rechargeable batteries


R e l i a b l e D O d o c u m e n t a t i o n …… with the inoLab® Oxi 7310

The new inoLab® Oxi 7310 is the perfect laboratory meter for measuring DO with the proven galvanic DO sensors. With automatic GLP/AQA documentation it supports traceability not only in the environmental laboratory. On demand also available with built-in printer.

Measuring safety

• Repeatable measuring results provided by the active, auto-matic AutoRead function with recognition of stable end values

• Automatic air-pressure compen-sation

• Graphic display with plain text menu for convenient and secure operation


• Alphanumeric entry of electrode serial number

• Transfer of all data in .csv for-mat via USB interface to PC, on demand formatted transfer into Excel (MultiLab® Importer, included in the delivery scope or as download).

• Data output via optional built-in printer possible


• Measures partial pressure, concentration and saturation • Salinity corrections• Storage for large measuring batches

• USB interface for fast data transfer

• Data output in .csv format or via optional built-in printer

• Connection for self-stirring DO sensor StirrOx® G

i n o L a b ® O x i 7 3 1 0


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3 Year Warranty

IP 43 cETLus

O r d e r i n g I n f o r m a t i o ninoLab® Laboratory Dissolved Oxygen Meter SETs Order No.

inoLab® Oxi 7310 SET 1 Professional dissolved oxygen meter, menu controlled, for measurements/documentation according GLP/AQA. Set including galvanic DO sensor. Meter with universal power supply, stand and operation manual, galvanical DO sensor CellOx® 325, polishing stripe, electrolyte, cleaning solution, replacement caps, CD-ROM incl. software, USB cable.

1BA301

inoLab® Oxi 7310P SET 4 Professional dissolved oxygen meter, menu controlled, for measurements/documentation according GLP/AQA, with integrated thermal printer. Set including galvanic DO sensor. Meter with universal power supply, stand and operation manual, self stirring galvanic DO sensor StirrOx® G, polishing stripe, electrolyte, cleaning solution, replacement caps, CD-ROM incl. software, USB cable.

1BA304P

Te c h n i c a l D a t aModel inoLab® Oxi 7310

All values ±1 digit

Concentration 0.00 … 20.00 mg/l ±0.5 % Mw.0 … 90 mg/L ±0,5 %

Saturation 0.0 … 200.0 % ±0.5 % v. Mw.0 … 600 % ±0.5 % v Mw.

Partial pressure 0 … 200.0 hPa, 0 to 1250 hPa

Temperature -5.0 … 105.0 °C ±0.1 °C

Calibration 1-point air-calibrationor versus external standard

Calibration storage up to 10 calibrations


Data storage manual 500/5000 automatic

Logger manual/time-controlled

Interface Mini USB

Printer (optional) thermal printer, width 58 mm

Power supply Universal power supply 100 to 240 V, 50/60 Hz, 4 x 1,5 V AA or 4 x 1.2 V NiMH rechargeable batteries

For other SETs or sensors in SET, see WTW Product Details

L a b o r a t o r y M e t e r s

Oxi


N E W

cETLus

P o r t a b l e D i s s o l v e d O x y g e n M e t e r sDissolved oxygen is an important parameter in environmen-tal analytics. It is therefore commonly used for field opera-tion. Its determination is processed in fish farming as well as in wastewater plants for monitoring the stationary measur-ing technology.


• Digital, optical DO measuring

• Multi-parameter instrument

M u l t i 3 4 1 0

The Multi 3410 is a portable single channel multi-parameter instrument for the digital measuring of dissolved oxygen. The IDS tech-nology supports optimal measuring in the easiest way along with efficient documentation. Without self consumption and resistant against air bubbles, carbon dioxide and ethanol the optical DO sensor FDO® 925 is not only recommended for BOD measuring, but also for further applications throughout the laboratory. The Multi 3410 also allows connecting further sensors and parameters.

Measuring safety


• Display of service information for supporting the best function• Maintenance free measuring system without use of chemicals

through factory calibrated sensor cap• Automatic air pressure compensation for precise measuring results


• Automatic, digital recording of all sensor data for traceability of measuring values

• User administration can be activated for allocation of user and measuring results

• Transfer of all data in .csv format via USB interface to PC, on demand formatted transfer into Excel (MultiLab® Importer, included in the delivery scope or as download).

• Data output via optional built-in printer possible


• Adjustable t90 for different applications• Measures partial pressure, concentration and saturation • Multi-parameter instrument• Color display• USB-A socket

N o t o n l y d i s s o l v e d o x y g e n i s d e t e r m i n e d s e c u r e l y …… with the Multi 3410

For other sensors in SET see WTW Product Details3 Year

Warranty

Oxygen measurements with the new digital MultiLine® multi-parameter measuring instruments see page 18

G e n e r a l F e a t u r e sModel Multi 3410

Data storage manual 500/10000 automatic

Data logger manual/time-controlled

Interface USB-A and Mini USB

Power supply Universal power supply with charging function or 4 x 1.2 V NiMH akku

O r d e r i n g I n f o r m a t i o nMultiLine® Order No.

Multi 3410 SET 4

Professional digital multi meter for portable field measurement, with single channel input, color graphic display incl. data logger and USB interfaces. DO case set with optical IDS DO probe FDO® 925, short instruction manual, stand, beaker, CD-ROM, driver software for USB, rechargeable batteries, cable, universal power supply and accessories.

2FD454

Multi 3410 SET 5

Same as 2FD454, but with optical IDS DO probe FDO® 925-3.

2FD455

IP 67


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P o r t a b l e M e t e r sN E W

P r o f i L i n e 3 0 0 0 S e r i e s

D e t e r m i n i n g d i s s o l v e d o x y g e n …… with the latest ProfiLine Oxi 3315 and the optical IDS oxygen sensor FDO® 925

The new Oxi 3315 is a portable instrument for digital measuring of optical DO. The IDS technology supports ideal measuring in the easiest way along with efficient documentation. Without self consumption and resistant against air bubbles, carbon dioxide and ethanol the optical DO sensor FDO® 925 is not only recommended for BOD measuring, but also for field and process applications.

IP 66IP 67

cETLus 3 Year Warranty

• Digital, optical DO measurements


• Complete documentation

P r o f i L i n e O x i 3 3 1 5

Measuring reliability


• Increased solution of measuring concentration 1 mg per 0.001 mg/l for trace measurements

• Maintenance-free measuring system through factory calibrated sensor cap

• Automatic air-pressure compensation


• Automatic, digital recording of all sensor data for trace-ability of measuring values

• Transfer of all data in .csv format via USB interface to PC


• Adjustable t90 for different applications

• Measures partial pressure, concen-tration and saturation

• Salinity corrections• Storage for large

measuring batches

Te c h n i c a l D a t aModel Oxi 3315


Calibration vapor-saturated air, if applicable against external standard

Data storage manual 500 data records; automatic 5 000 data records

Data output .csv or ASCII

Measuring channel 1

Logger manual/time-controlled

Interface Mini USB

Power supply 4 x 1.5 V AA or 4 x 1.2 V NiMH rechargeable batteries or via USB

For other sensors in Sets see WTW Product Details

O r d e r i n g I n f o r m a t i o nProfiLine Portable Dissolved Oxygen Meter SET Order No.

Oxi 3315 SET 1 Professional, field proven DO meter for digital IDS DO sensors with backlit graphic display for portable application including data logger and USB interface. Case set including optical IDS DO sensor FDO® 925, stand, beaker. Including short instruction manual CD-ROM, batteries, driver software for USB, cable.

2BD351

Oxi 3315 SET 5 Meter see above, but with optical IDS DO sensor FDO® 925 and Bev kit (containing panel with meter holder, flow through vessel, tube, tube adapter, meter armor SM Pro), without portable case.

2BD355

ProfiLine Oxi 3310


• Waterproof USB interface for fast data transfer

• Data output in .csv format

• Calibration versus external standard possible (Winkler-titration)

P r o f i L i n e O x i 3 3 1 0

Measuring safety

• Repeatable measuring results provided by the active, automatic AutoRead function with recognition of stable end values

• Automatic air-pressure compensation• Silicone keypad with tangible key click, optional

protective armor for field operation





R e l i a b l e D O d o c u m e n t a t i o n …… with the ProfiLine Oxi 3310

The Oxi 3310 is a combination of a robust portable meter and data logger for gathering measuring data automatically and PC supported evaluation.

Complete as SET

ProfiLine Oxi 3210


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• Convenient user guidance

• Manual storage function

• For galvanic DO sensors

P r o f i L i n e O x i 3 2 1 0

Measuring safety


• Automatic air-pressure compensation• Silicone keypad with tangible key click, optional

protective armor for field operation


• Storage with data output display or occasional documentation.



M e a s u r i n g D O p r e c i s e l y …… with the ProfiLine Oxi 3210

The ProfiLine Oxi 3210: A top-class portable DO measuring instrument - with modern, user-friendly interface.

P o r t a b l e M e t e r s


• Suitable for CellOx® or DurOx® sensors

• Backlit graphic display

• Automatic air-pressure compensation

P r o f i L i n e O x i 3 2 0 5

M e a s u r i n g D O e a s i l y …… with the ProfiLine Oxi 3205

The Oxi 3205 is an easy-to-use, reliable measuring instrument for routine measurements.

Measuring safety


• Safe operation: Automatic functions reduce the number of keys (6).

• OxiCal® air-calibration• Waterproof 8-pin socket for measurements in the field.




• Silicone keypad with tangible key click, can be operated with gloves

• For field operation available in a case set with proven sensors

IP 66IP 67


Te c h n i c a l D a t aModel Oxi 3205 Oxi 3210 Oxi 3310

Range/ O2 Conc. Resolution/ O2 saturationAccuracy O2 part. pressure Temperature

0.00 … 20.00 mg/l (20.0 mg/l*) ±0.5 % of value; 0 … 90 mg/l ±0.5 % of value 0.0 … 200.0 % (200 %*) ±0.5 % of value; 0 … 600 % ±0.5 % of value0.0 … 200.0 mbar (200 mbar*) ±0.5 % of value, 0 ... 1250 mbar ±0.5 % of value -5.0 … +105.0 °C ±0,1 °C (23 … 221 °F)

Temperature compensation Better than 2% at 0 ... +40 °C (32 … 104 °F)

Air pressure compensation Automatic with built-in pressure sensor (500 … 1100 mbar)

Salinity correction 0 or 35 fixed Automatic from 0.0 … 70.0, adjustable via display

Calibration OxiCal® rapid calibration in OxiCal®-SL or OxiCal®-D

Memory/Logger – Manual 200 Manual 500/5000 automatic

Display LCD Graphic, backlit

Continuous operation Up to 800 hrs. without/100 hrs. with backlight

For other sensors in SET, see WTW Product Details * if DurOx® DO sensor is used

O r d e r i n g I n f o r m a t i o nProfiLine Portable Dissolved Oxygen Meter SETs Order No.

Oxi 3205 SET 3 Robust and waterproof portable dissolved oxygen meter for battery operation, case set with DurOx® 325 and accessories

2BA103

Oxi 3210 SET 1 Robust and waterproof portable dissolved oxygen meter including memory, for battery operation, case set with CellOx® 325 and accessories

2BA201

Oxi 3310 SET 1 Robust and waterproof portable dissolved oxygen meter including memory, data logger and USB mini B interface, for battery operation, case set with CellOx® 325 and accessories

2BA301


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P o r t a b l e & F i e l d M e t e r s

• High-precision, indestructible, waterproof

• Recorder output corresponding to display

• Depths measure ment down to 100 m (330 ft)

P r o f i L i n e O x i 1 9 7 0 i

P r o f i L i n e D i s s o l v e d O x y g e n F i e l d M e t e r sThe WTW dissolved oxygen meter ProfiLine Oxi 1970i, supplied with integrated powerful NiMH rechargeable batteries, is both waterproof (IP 66) and sub mer si ble (IP 67). This easy-to-use meter conforms to GLP and has an 800 data point data logger and accurate recorder output.

Te c h n i c a l D a t aModel ProfiLine Oxi 1970i

Range/ O2 Conc. Resolution O2 saturation

0.00 … 19.99 mg/l (19.9 mg/l*), 0.0 … 90.0 mg/l (90 mg/l*) 0.0 … 199.9% (199%*), 0 … 600%

Accuracy O2 Conc. (±1 digit) O2 saturation Temperature

±0.5% of value±0.5% of value±0.1 K

Air pressure compensation Automatic with built-in pressure sensor (500 … 1100 hPa)

Temperature compensation <2% at 0 ... +40 °C (32 … 104 °F)

Salinity correction Automatic from 0.0 … 70.0, adjustable via display

Calibration OxiCal® rapid calibration in OxiCal®-SL or OxiCal®-D

Dissolved oxygen depth armature TA 197 Oxi with built-in temperature probe, up to 100 m (330 ft) cable with waterproof plug (IP 67), and pressure-resistant steel armor with screw-off protective hood. Fits into small boreholes (2“ dia.).

* depends on DO sensor and medium

Depth armatures for measurements down to depths of 100 m (330 ft) see WTW Product Details

O r d e r i n g I n f o r m a t i o nPortable Dissolved Oxygen Field Meter Order No.

ProfiLine Oxi 1970i Robust, waterproof, submersible dissolved oxygen meter 3B30-010

Battery-powered stirrer BR 325 for profile and depth measurements.

TA 1 9 7 O x i

B R 3 2 5

IP 66IP 67


External control via PC with MultiLab® pilot. They are equipped with a carrying/support handle and carrying strap. The Oxi 1970i is suitable for depth measurements down to 100 m (330 ft) in combina-tion with the TA 197 Oxi depth armature.


• Immediately ready for measurement

• Simple air calibration using calibration vessel

Galvanic Dissolved Oxygen Sensors

Only for ProfiLine portable and field meters and Multi 350i/3500i*

Membrane covered galvanic dissolved oxygen sensor

• Membranelastsupto6months• Lowapproachflow(measurements

obtained with minimal sample flow)• Waterproofsensor(IP68–2bar)• IncludesSK-D protective sensor guard• IncludescalibrationvesselOxiCal®-D

G a l v a n i c D i s s o l v e d O x y g e n S e n s o r sWTW offers three types of galvanic dissolved oxygen sen-sors, none of which require polarization time prior to mea-surement as is the case with other DO sensors. WTW DO sensors are equipped with preassembled membrane caps preventing sensor prep errors caused by improper mem-brane installation, and have built-in temperature compensa-tion capabilities.

D u r O x ® 3 2 5

IDS Dissolved Oxygen Sensors see page 12

F D O ® 9 2 5

* North American version


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D i s s o l v e d O x y g e n S e n s o r s

A c c e s s o r i e s

Membrane covered galvanic dissolved oxygen sensor

• Membranelastsupto6months• Featuresmembraneleakmonitoring• Highsignalresolution(prevents

weakened signal with longer cable lenghts)

• Rapidmeasurementresponse• Waterproofsensor(IP68–2bar)• IncludescalibrationvesselOxiCal®-SL

For all inoLab® Oxi and ProfiLine Oxi 1970i

Self-stirring dissolved oxygen sensor – simul taneous stirring and measurement

• Membranelastsupto6months• Featuresmembraneleakmonitoring• Sensorincludesautomaticstirrer• Waterproofsensor(IP68–2bar) • Extremelylowself-consumptionof oxygen• Includescalibrationvessel OxiCal®-ST

Various calibration and storage vessels are available for dissolved oxygen sensors.

see WTW Product Details

C e l l O x ® 3 2 5S t i r r O x ® G

For calibration and storage vessels and other sensors and accessories, see WTW Product Details

O r d e r i n g I n f o r m a t i o nDissolved oxygen sensors (The sensor includes accessory case with spare parts and maintenance supplies) Order No.

StirrOx® G Self-stirring dissolved oxygen sensor for oxygen determination in Karlsruhe bottles and Winkler bottles, with OxiCal®-ST calibration and storage vessel

201 425

CellOx® 325 Galvanic dissolved oxygen sensor with OxiCal®-SL calibration and storage vessel, waterproof plug, cable length 1.5 m (4.92 ft)

201 533

DurOx® 325-3 Galvanic dissolved oxygen sensor with OxiCal®-D calibration vessel, waterproof plug, cable length 3 m (9.84 ft)

201 570

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